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Greatly expand system() shell code features

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The cosmopolitan command interpreter now has 13 builtin commands,
variable support, support for ; / && / || syntax, asynchronous support,
and plenty of unit tests with bug fixes.

This change fixes a bug in posix_spawn() with null envp arg. strace
logging now uses atomic writes for scatter functions. Breaking change
renaming GetCpuCount() to _getcpucount(). TurfWar is now updated to use
the new token bucket algorithm. WIN32 affinity masks now inherit across
fork() and execve().
This commit is contained in:
Justine Tunney 2022-10-11 21:06:27 -07:00
parent e7329b7cba
commit b41f91c658
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GPG key ID: BE714B4575D6E328
80 changed files with 1370 additions and 344 deletions
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22
libc/calls/getcpucount.c
View file

@ -34,7 +34,7 @@
#define HW_NCPUONLINE_NETBSD 16
#define ALL_PROCESSOR_GROUPS 0xffff
static unsigned GetCpuCountLinux(void) {
static unsigned _getcpucount_linux(void) {
cpu_set_t s = {0};
if (sys_sched_getaffinity(0, sizeof(s), &s) != -1) {
return CPU_COUNT(&s);
@ -43,7 +43,7 @@ static unsigned GetCpuCountLinux(void) {
}
}
static unsigned GetCpuCountBsd(void) {
static unsigned _getcpucount_bsd(void) {
size_t n;
int c, cmd[2];
n = sizeof(c);
@ -62,12 +62,12 @@ static unsigned GetCpuCountBsd(void) {
}
}
static unsigned GetCpuCountImpl(void) {
static unsigned _getcpucount_impl(void) {
if (!IsWindows()) {
if (!IsBsd()) {
return GetCpuCountLinux();
return _getcpucount_linux();
} else {
return GetCpuCountBsd();
return _getcpucount_bsd();
}
} else {
return GetMaximumProcessorCount(ALL_PROCESSOR_GROUPS);
@ -77,18 +77,24 @@ static unsigned GetCpuCountImpl(void) {
static int g_cpucount;
// precompute because process affinity on linux may change later
__attribute__((__constructor__)) static void init(void) {
g_cpucount = GetCpuCountImpl();
__attribute__((__constructor__)) static void _getcpucount_init(void) {
g_cpucount = _getcpucount_impl();
}
/**
* Returns number of CPUs in system.
*
* This is the same as the standard interface:
*
* sysconf(_SC_NPROCESSORS_ONLN);
*
* Except this function isn't a bloated diamond dependency.
*
* On Intel systems with HyperThreading this will return the number of
* cores multiplied by two.
*
* @return cpu count or 0 if it couldn't be determined
*/
unsigned GetCpuCount(void) {
unsigned _getcpucount(void) {
return g_cpucount;
}